Fixes issue with returning from shared document view. Calls show() before fadeOut() on large video to avoid situation when we end up with black screen and are unable to select new video. Updates app.bundle.js.

index.html

     <script src="libs/popover.js?v=1"></script><!-- bootstrap tooltip lib -->
     <script src="libs/toastr.js?v=1"></script><!-- notifications lib -->
     <script src="interface_config.js?v=5"></script>
-    <script src="libs/app.bundle.js?v=127"></script>
+    <script src="libs/app.bundle.js?v=128"></script>
     <script src="analytics.js?v=1"></script><!-- google analytics plugin -->
     <link rel="stylesheet" href="css/font.css?v=7"/>
     <link rel="stylesheet" href="css/toastr.css?v=1">

modules/UI/videolayout/LargeVideo.js

     switch (state)
     {
         case "video":
-            selector = "#largeVideo";
+            selector = "#largeVideoWrapper";
             break;
         case "etherpad":
             selector = "#etherpad>iframe";
      * @return <tt>true</tt> if visible, <tt>false</tt> - otherwise
      */
     isLargeVideoVisible: function() {
-        return $('#largeVideo').is(':visible');
+        return $('#largeVideoWrapper').is(':visible');
     },
     /**
      * Returns <tt>true</tt> if the user is currently displayed on large video.
         var newSmallVideo = this.VideoLayout.getSmallVideo(resourceJid);
         console.log('hover in ' + resourceJid + ', video: ', newSmallVideo);
 
+        if (!newSmallVideo) {
+            console.error("Small video not found for: " + resourceJid);
+            return;
+        }
+
         if (!LargeVideo.isCurrentlyOnLarge(resourceJid) || forceUpdate) {
             $('#activeSpeaker').css('visibility', 'hidden');
 
             // <video> elements with plugin <object> tag. In Safari jQuery is
             // unable to store values on this plugin object which breaks all
             // animation effects performed on it directly.
-            $('#largeVideoWrapper').fadeOut(300,
+            //
+            // If for any reason large video was hidden before calling fadeOut
+            // changeVideo will never be called, so we call show() in chain just
+            // to be sure
+            $('#largeVideoWrapper').show().fadeOut(300,
                 changeVideo.bind($('#largeVideo'), this.isLargeVideoVisible()));
         } else {
             if (currentSmallVideo) {
         if(!isEnabled)
             return;
         if (isVisible) {
-            $('#largeVideo').css({visibility: 'visible'});
+            $('#largeVideoWrapper').css({visibility: 'visible'});
             $('.watermark').css({visibility: 'visible'});
             if(currentSmallVideo)
                 currentSmallVideo.enableDominantSpeaker(true);
         }
         else {
-            $('#largeVideo').css({visibility: 'hidden'});
+            $('#largeVideoWrapper').css({visibility: 'hidden'});
             $('#activeSpeaker').css('visibility', 'hidden');
             $('.watermark').css({visibility: 'hidden'});
             if(currentSmallVideo)
         }
     },
     showAvatar: function (resourceJid, show) {
-        if(!isEnabled)
+        if (!isEnabled)
             return;
-        if(this.getResourceJid() === resourceJid && state === "video") {
-            $("#largeVideo").css("visibility", show ? "hidden" : "visible");
+        if (this.getResourceJid() === resourceJid && state === "video") {
+            $("#largeVideoWrapper")
+                .css("visibility", show ? "hidden" : "visible");
             $('#activeSpeaker').css("visibility", show ? "visible" : "hidden");
             return true;
         }